Ask HN: Why serialize documents to disk instead of memory-mapping runtime state?

By ShengATsao · 2026-09-15 · 2 points · 4 comments

Opening files like docx requires heavy string parsing and pointer allocation. After an OS swaps active RAM pages out as to flash disk as virtual memory, it can restore them almost instantly. Using 2X more flash disk space is worth if we can achieve millisecond loads. Why hasn't…

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